Staff members will be tested on Monday, which is a rest day on the Tour, organisers told Reuters.

Three riders in two days had to pull out of the race after being infected with coronavirus and showing symptoms, raising fears that the bunch could be decimated when all riders were tested after Sunday's ninth stage given the close contact riders are in throughout the race.

However, the UCI said in a statement on Monday: "All tests were negative."

Last year, if two members of a team tested positive for COVID the whole outfit would be sent packing, which is not the case in this edition.

Whether a rider who tests positive can stay in the race is decided following a meeting between race, UCI and team doctors, depending on the rider's viral load.

Cofidis' Guillaume Martin, AG2R Citreon's Geoffery Bouchard and most notably overall leader Tadej Pogacar's teammate, Vegard Stake Laengen, are the riders to withdraw so far. Tensions are high for Pogacar and his team, UAE Team Emirates with COVID circling.

But with no positive tests, the Tour will continue unabated on Tuesday with a hilly 148.5km from Morzine to Megeve.